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Taxonomic value of leaf epidermal markers in discriminating medicinal tree species of Apocynaceae Juss in Nigeria











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    Towards transformation of agricultural landscapes: Determination of agroforestry tree species producing beneficial ecosystem services to local farmers in Nigeria
    XV World Forestry Congress, 2-6 May 2022
    2022
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    The aim of this study is to transform agricultural landscapes through incorporating tree species that produce ecosystem services beneficial to local farmers. To achieve this, the study assessed existing diversity of tree species producing ecosystem services in agricultural farmlands in selected local communities of southwest Nigeria. The information obtained will then be used to design strategy for intensification of agroforestry tree species for transformation of agricultural landscapes. Purposive sampling was employed in selecting 66 local farmers who has personal farmlands. Information on available tree species and their diversification on farmlands were obtained through inventory and field observation. Primary information obtained through questionnaire administration include ecosystem services provided by trees on the farmlands. A total of 38 forest tree species (24 families) were identified on the different farmlands. Provisioning services dominated the ecosystem services benefits obtained by the farmers and their households. The study has revealed the different ecosystem services provided by forest trees on farmlands. Meanwhile, most of the farmers prefer trees that meet their personal needs. This means for proper adoption of forest trees at local level in agroforestry system, such trees must be able to meet local demands by providing some of their basic needs. The basic needs range from food to medicines, energy, cultural benefits, among others. Meeting of such needs are sometimes location specifics, hence the needto carry out adequate survey of such needs for intended intervention strategy. Keywords: Agriculture, forest tree species, farmlands, provisioning services, ecosystem serviceId ID:3480958
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    Volume yield, tree species diversity and carbon storage of sacred groves in Southwestern Nigeria
    XV World Forestry Congress, 2-6 May 2022
    2022
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    Recently, the role of sacred groves in biodiversity conservation and provision of ecosystem goods and services has been a subjected to scientific investigation. In this study, data were collected from four sacred groves (Osun‐Osogbo, Igbo‐Olodumare, Idanre Hills and Ogun‐Onire) in southwestern, Nigeria to investigate their volume yield, tree species diversity, biomass and carbon storage potentials. Data were collected from 32 sample plots of 20 m x 40 m, established across the four sacred groves. In each plot, all woody plants with dbh ≥10cm were identified and their growth variables (dbh and height) measured. Non‐destructive allometric equation method was adopted for the estimation of volume, biomass and carbon stock production. The number of families and tree species encountered in the groves (understory and overstory layers) ranged from 22 to 32 and 41 to 85, respectively. The four groves had high Shannon‐Wiener diversity index (2.63 ‐ 3.55). They had high volume yield (244.99 m3 ha‐1 to 343.08 m3 ha‐1), biomass production (87.8 t ha‐1 to 231.86 t ha‐1) and carbon stock (43.9 t ha‐1 to 115.9 t ha‐1), with potentials for continuous growth as evidenced by the presence of young trees in the lower canopy. Thus, besides being good biodiversity conservation method, sacred groves act as sink of atmospheric CO2 considering their high biomass and carbon accumulation. The use and protection of sacred groves by indigenous people has enhanced tree species diversity, improved carbon sequestration and production of other forests ecosystem goods and services, thereby mitigating climate change and its effects. Keywords: Biomass, Climate change, Carbon stock, Carbon sequestration, sacred forest and Traditional methods ID: 3605244
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    Farmer-managed natural regeneration (FMNR) on Nigeria's drylands: the influence of changing climate on agroforestry trees management
    XV World Forestry Congress, 2-6 May 2022
    2022
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    In Northern Nigeria, prolonged drought critically affects parkland tree regeneration and reduces land productivity and income. However, documentation of parkland trees management in extreme climatic conditions is scarce in the region. Hence, the need to evaluate the management via tree preferences by farmers on Nigeria’s dry agroecological zones (AEZ). To address this, field surveys were conducted in nine villages along a north-south transect, with precipitation increasing southwards through three AEZ of Nigeria: Sudan Savannah (SS), Northern Guinea Savannah (NGS) and Southern Guinea Savannah (SGS). Using Open Data Kit (ODK), information from 92 respondents and 4 focused groups relating to tree regeneration management were collected and aggregated. These include the abundance of the most preferred trees on farms, their regeneration potentials, management and propagation status, as well as usage and land-use constraints. Results showed drought- tolerant species (Parkia biglobosa and Mangifera indica) topped the dominant trees list across the three AEZ, both having 50% more than other agroforestry trees. Though farmers’ management strategies were highly relevant to regeneration and productivity, they did not differ across the zones (P<0.05) except at cropping outside tree canopy cover between SGS and SS using the Kruskal-Wallis test. Positive associations (0.5-0.8) between functions and preference for trees on farms for dominant agroforestry species. Farmers’ adaptation strategy to minimise risk to climate drivers and increase dry forests landscapes resilience made the driest AEZ (SS) had most species on farms and positively impacted the locals' livelihoods. Keywords: Trees, Drought, Farmers, Regeneration, Parklands ID: 3486501

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    This document elaborates the revised International Standard Statistical Classification of Fishing Gear (ISSCFG), as endorsed and adopted for implementation by the FAO Coordinating Working Party on Fishery Statistics (CWP) at its Twenty-fifth Session in February 2016 in Rome, Italy. The classification applies to commercial, subsistence and recreational fisheries in marine and freshwater fisheries. The document provides definitions and illustrations of the configuration and mode of operation of typical fishing gears. The primary purpose is to assist FAO Members, regional fishery bodies, as well as those working on fishery statistics and management, to correctly attribute and report fisheries catches made by different gear types. The document also contributes to the prevention, deterrence and elimination of illegal, unreported and unregulated (IUU) fishing by providing monitoring, control and surveillance personnel with information to identify the type of fishing gear with regard to licence and authorization to carry out fishing operations. Finally, the document also provides context and references for some contemporary conservation issues related to major fishing gear types; it can therefore be used as a reference text for students and researchers in fisheries and marine conservation.
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    The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018.
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    FAO Strategy on Climate Change 2022–2031 2022
    The FAO Strategy on Climate Change 2022–2031 was endorsed by FAO Council in June 2022. This new strategy replaces the previous strategy from 2017 to better FAO's climate action with the Strategic Framework 2022-2031, and other FAO strategies that have been developed since then. The Strategy was elaborated following an inclusive process of consultation with FAO Members, FAO staff from headquarters and decentralized offices, as well as external partners. It articulates FAO's vision for agrifood systems by 2050, around three main pillars of action: at global and regional level, at country level, and at local level. The Strategy also encourages key guiding principles for action, such as science and innovation, inclusiveness, partnerships, and access to finance.